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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, in Rosslyn Farms, Pennsylvania, is another cold winter month, with an average temperature fluctuating between 33.4°F (0.8°C) and 21°F (-6.1°C). Rosslyn Farms's January weather, with an average high temperature of 33.4°F (0.8°C) and an average low temperature of 21°F (-6.1°C), tends to be the coldest of the year. Weather in January »
Weather in February
The last month of the winter, February, is another cold month in Rosslyn Farms, Pennsylvania, with temperature in the range of an average low of 23.4°F (-4.8°C) and an average high of 37.8°F (3.2°C). The commencement of February notes an average high-temperature of a still wintry 37.8°F (3.2°C), exhibiting little difference from the previous month. Weather in February »
Weather in March
March, the first month of the spring in Rosslyn Farms, is a chilly month, with an average temperature fluctuating between 31.5°F (-0.3°C) and 47.8°F (8.8°C). The beginning of March marks a shift in the average high-temperature, moving from February's wintry 37.8°F (3.2°C) to a chilly 47.8°F (8.8°C). Weather in March »
Weather in April
April is a refreshing spring month in Rosslyn Farms, Pennsylvania, with an average temperature varying between 41.4°F (5.2°C) and 60.6°F (15.9°C). The shift from March to April is marked by an increase in the average high-temperature, moving from a frosty 47.8°F (8.8°C) to a refreshing 60.6°F (15.9°C). Weather in April »
Weather in May
May, the last month of the spring in Rosslyn Farms, is an agreeable month, with an average temperature fluctuating between 51.3°F (10.7°C) and 72.3°F (22.4°C). An upsurge in temperatures occurs as April gives way to May, with average highs shifting from a mild 60.6°F (15.9°C) to an agreeable 72.3°F (22.4°C). Weather in May »
Weather in June
June, the first month of the summer in Rosslyn Farms, is a moderately hot month, with an average temperature ranging between min 58.3°F (14.6°C) and max 79°F (26.1°C). June brings a slight rise in Rosslyn Farms's average high-temperature, moving from an agreeable 72.3°F (22.4°C) in May to a moderately hot 79°F (26.1°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Rosslyn Farms, Pennsylvania, with an average temperature varying between 62.2°F (16.8°C) and 83.7°F (28.7°C). Rosslyn Farms witnesses the warmest weather in July, with temperatures averaging a high of 83.7°F (28.7°C) and a low of 62.2°F (16.8°C). July's heat index is computed to be a hot 91.4°F (33°C). Weather in July »
Weather in August
August, the last month of the summer in Rosslyn Farms, is also a moderately hot month, with an average temperature fluctuating between 82.4°F (28°C) and 60.8°F (16°C). Rosslyn Farms notes an average high-temperature of a still warm 82.4°F (28°C) in August, displaying minor variation from July. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Rosslyn Farms, Pennsylvania, with temperature in the range of an average high of 75.7°F (24.3°C) and an average low of 55.8°F (13.2°C). A mild drop in Rosslyn Farms's average high-temperature is observed in September, transitioning from a warm 82.4°F (28°C) in August to a still moderately hot 75.7°F (24.3°C). Weather in September »
Weather in October
October, like September, in Rosslyn Farms, Pennsylvania, is another comfortable autumn month, with an average temperature ranging between min 45.3°F (7.4°C) and max 62.1°F (16.7°C). October's onset corresponds with a shift in the average high-temperature, moving from a moderately hot 75.7°F (24.3°C) in September to a comfortable 62.1°F (16.7°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Rosslyn Farms, Pennsylvania, with an average temperature ranging between min 34.2°F (1.2°C) and max 49.3°F (9.6°C). During Rosslyn Farms's transition into November, the average high-temperature lessens, moving from an enjoyable 62.1°F (16.7°C) in October to a frosty 49.3°F (9.6°C). Weather in November »
Weather in December
December, the first month of the winter in Rosslyn Farms, is also an icy month, with an average temperature fluctuating between 28.4°F (-2°C) and 39.7°F (4.3°C). Rosslyn Farms's transition into December involves a shift in temperature, receding from a chilly 49.3°F (9.6°C) in November to a wintry 39.7°F (4.3°C). Weather in December »
[Resources]Frequently asked questions
What time of the year is the coldest in Rosslyn Farms?
The coldest time of the year is January, with temperatures averaging a high of 33.4°F (0.8°C) and a low of 21°F (-6.1°C).
How much does it rain in Rosslyn Farms?
In Rosslyn Farms, Pennsylvania, during the entire year, the rain falls for 132.6 days and collects up to 11.5" (292mm) of precipitation.
When does it snow in Rosslyn Farms?
January through April, November and December are months with snowfall in Rosslyn Farms, Pennsylvania.
How many days does it snow in Rosslyn Farms?
Throughout the year, in Rosslyn Farms, Pennsylvania, there are 32.5 snowfall days, and 3.66" (93mm) of snow is accumulated.
What is the month with the least sunshine in Rosslyn Farms?
The month with the least sunshine in Rosslyn Farms is January, with an average of 3h of sunshine.
What is the most humid month in Rosslyn Farms?
With an average relative humidity of 85%, February is the most humid month.
What is the snowiest month in Rosslyn Farms?
February is the month with the most snowfall in Rosslyn Farms. Snow falls for 7.8 days and accumulates 0.98" (25mm) of snow.
When is Daylight Saving Time (DST) in Rosslyn Farms?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Rosslyn Farms, Pennsylvania, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
When it does not snow in Rosslyn Farms?
In Rosslyn Farms, snow does not fall in May through October.
When are the longest days in Rosslyn Farms?
With an average of 15h and 0min of daylight, June has the longest days of the year in Rosslyn Farms, Pennsylvania.
What are the months with the highest UV index in Rosslyn Farms?
The months with the highest UV index in Rosslyn Farms, Pennsylvania, are June through August, with an average maximum UV index of 6.
What month is the hottest in Rosslyn Farms?
Rosslyn Farms's temperatures peak on average in July, reaching 83.7°F (28.7°C) at their highest and 62.2°F (16.8°C) at their lowest.
What are the least humid months in Rosslyn Farms?
July and August, with an average relative humidity of 75%, are the least humid months in Rosslyn Farms, Pennsylvania.
What is the wettest month in Rosslyn Farms?
July is the month with the most rainfall. Rain falls for 15.6 days and accumulates 1.34" (34mm) of precipitation.
What month has the most sunshine in Rosslyn Farms?
With an average of 10.2h of sunshine, August has the most sunshine of the year.
What is the driest month in Rosslyn Farms?
November is the month with the least rainfall in Rosslyn Farms, Pennsylvania. Rain falls for 7.7 days and accumulates 0.67" (17mm) of precipitation.
What is the month with the shortest days in Rosslyn Farms?
December has the shortest days of the year in Rosslyn Farms, with an average of 9h and 18min of daylight.
When is the lowest UV index in Rosslyn Farms?
With an average maximum UV index of 1, December is the month with the lowest UV index in Rosslyn Farms.
Average temperature
Rosslyn Farms, PA
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (33.4°F).
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure
Rosslyn Farms, PA
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
30"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
Rosslyn Farms, PA
- Average wind speed in January:
7.9mph - Average wind speed in February:
7.6mph - Average wind speed in March:
7.3mph - Average wind speed in April:
7.4mph - Average wind speed in May:
6mph - Average wind speed in June:
5.6mph
- Average wind speed in July:
4.7mph - Average wind speed in August:
4.7mph - Average wind speed in September:
5.1mph - Average wind speed in October:
6.2mph - Average wind speed in November:
6.8mph - Average wind speed in December:
7.3mph
The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity
Rosslyn Farms, PA
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are July and August (75%).
Average rainfall
Rosslyn Farms, PA
- Average rainfall in January:
0.71" - Average rainfall in February:
0.79" - Average rainfall in March:
0.83" - Average rainfall in April:
1.22" - Average rainfall in May:
1.22" - Average rainfall in June:
1.26"
- Average rainfall in July:
1.34" - Average rainfall in August:
0.98" - Average rainfall in September:
0.79" - Average rainfall in October:
0.83" - Average rainfall in November:
0.67" - Average rainfall in December:
0.87"
The wettest month (with the highest rainfall) is July (1.34").
The driest month (with the least rainfall) is November (0.67").
Average rainfall days
Rosslyn Farms, PA
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
6.4 days - Average rainfall days in March:
10.5 days - Average rainfall days in April:
12.8 days - Average rainfall days in May:
15.5 days - Average rainfall days in June:
13.7 days
- Average rainfall days in July:
15.6 days - Average rainfall days in August:
14.3 days - Average rainfall days in September:
10.6 days - Average rainfall days in October:
10 days - Average rainfall days in November:
7.7 days - Average rainfall days in December:
8.2 days
The month with the highest number of rainy days is July (15.6 days).
The month with the least rainy days is February (6.4 days).
Average snowfall
Rosslyn Farms, PA
The month with the highest snowfall is February (0.98").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Rosslyn Farms, PA
- Average snowfall days in January:
9.3 days - Average snowfall days in February:
7.8 days - Average snowfall days in March:
5 days - Average snowfall days in April:
1.3 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.2 days - Average snowfall days in November:
2.5 days - Average snowfall days in December:
6.4 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Rosslyn Farms, PA
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 2min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
3h and 0min - Average sunshine in February:
3h and 4min - Average sunshine in March:
5h and 2min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 5min - Average sunshine in June:
9h and 3min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 3min - Average sunshine in October:
5h and 2min - Average sunshine in November:
4h and 5min - Average sunshine in December:
3h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days
Rosslyn Farms, PA
- Average sunshine days in January:
17.6 days - Average sunshine days in February:
15.3 days - Average sunshine days in March:
15.8 days - Average sunshine days in April:
15 days - Average sunshine days in May:
12.2 days - Average sunshine days in June:
13.9 days
- Average sunshine days in July:
12.7 days - Average sunshine days in August:
14.1 days - Average sunshine days in September:
16.4 days - Average sunshine days in October:
18.1 days - Average sunshine days in November:
19.6 days - Average sunshine days in December:
18.5 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (12.2 days).
Average UV index
Rosslyn Farms, PA
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Rosslyn Farms, PA
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility
Rosslyn Farms, PA
The months with the highest visibility are April, June, July, August and November (6mi).
The months with the lowest visibility are January, February, March, May, September, October and December (5mi).
Rosslyn Farms, Pennsylvania, USA
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